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    , initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            width: 37.5rem;
            height: 37.5rem;
            background-color: pink;
        }
    </style>
</head>

<body>
    <div class="box"></div>


    <script src="js/echarts.min.js"></script>

    <script>
        // echarts 初始化
        var myChart = echarts.init(document.querySelector(".box"))
        // 指定配置项和数据
        option = {
            xAxis: {
                type: 'category',
                data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
            },
            yAxis: {
                type: 'value'
            },
            series: [
                {
                    data: [120, 200, 150, 80, 70, 110, 130],
                    type: 'pie'
                }
            ]
        };
        myChart.setOption(option);
    </script>
</body>

</html>